IE to FF

I know am late. But I have arrived. With Firefox. I installed it on my machine this morning and migrated all my bookmarks and cookies to the new browser.

Having used IE7 for few months now, I felt there’s no new learning required to use FF. Their look-n-feel are somewhat similar. Since Firefox has a much larger contributing community, I think it has lot many user friendly customizations.

Which feature of Firefox you think scores over IE7 ?